Sprint, for its part, said it offers a range of contract and no-contract options through its Sprint-branded service as well as prepaid brands Boost and Virgin Mobile.

“Sprint gives its customers the best of both worlds with Truly Unlimited 4G LTE data on smartphones and the best value for customers with a savings of $110 over T-Mobile when comparing the total cost of ownership over two years for the 16 GB version of the Samsung Galaxy S III,” Sprint said. “In addition, true no-term contract options are available with Virgin Mobile, Boost Mobile and Sprint As You Go.”

Verizon touted both its plans and the breadth of its LTE network, which is available in areas covering 273 million people.

“Verizon Wireless customers have for years enjoyed the ability to purchase a phone at full retail price on month to month contract,” it said in a statement. “Phones on our website are offered at full retail price as well as the discounted price to give customers a choice in how they purchase their mobile devices.”

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